An ArcGis geoprocessing tool that calculates the least-cost path from a source to a destination.

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2answers
20 views

Handling 2s in cost path analysis output?

I am trying to compute shortest distance to stream from various point locations on the landscape. I am using the cost path tool in spatial analyst to do this . I am using a DEM as a cost distance ...
3
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1answer
73 views

Distance from rivers, taking into account terrain elevation

I am interested in building a raster of the distance from rivers in a territory under study. I have digitized the course of the rivers in ArcGis 10.1. I have used the 'Euclidean Distance' tool to ...
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1answer
40 views

What is the right methodology to assign costs to edges of a network?

I am producing a routing facility for cycling safety based on an OSM network. The edges of this network have costs and these are calculated from different criteria both related to intrinsic (as the ...
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1answer
43 views

What is an anisotropic cost-of-passage map called in ArcGIS 10.1

I am trying to make sense of a few sources of information. In Geographic Information Systems in Archaeology Conolly and Lake (2006: 214-224) provide a sort of "step-by-step" procedure for creating ...
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0answers
35 views

Implement a least cost path in a graph

I am trying to produce a routing functionality in a web-GIS that, given a start and an end point, will retrieve the least cost path taking into account points along edges representing major costs, ...
4
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2answers
46 views

Path Distance calculation limited to downhill only

I am trying to calculate a path between two points with a relative elevation difference of about 100m and 3km separation. The points represent the start and end of a gravity fed waste water pipe. ...
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1answer
55 views

Cost Distance Paths in Python

I have a feature dataset with 317 points (UpperPoints) and another with 394 (LowerPoints) points. Now I want to calculate the cost paths as in this example here. However there are multiple files used ...
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0answers
13 views

What happens if raster overlapping when I run cost distance?

I'm having problem with the cost distance tool in Arcmap. I need to use cost distance to find out the cost of having to move from a subway station to a green area. But the resulting cost distance ...
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0answers
45 views

Cost-Distance Tool not producing logical answer

I am working on creating a cost catchment based on Tobler's equation in ArcGIS10.1. I feel confident in my cost surface; it produces a raster where each cell equals the time in hours that it would ...
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0answers
50 views

How to create cost surface for least cost water transport analysis?

I am working on a project to derive least cost pathways between sites by dug out canoe travel. Has anyone worked on a similar project or found a function like the Tobler hiking function that can be ...
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0answers
29 views

RemapValue Usage

I successfully produce and empty cost raster at the end of this script. I am fairly confident it has something to do with RemapValue parameters? Does anyone know why my out put cost distance raster ...
0
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1answer
17 views

whereClause syntax for Cost Distance parameter

I am looking to create a sql expression regarding point feature class and selection based on 'Name' field to pass to arcpy.sa.CostDistance() param[0]. similat to: savepath = env.workspace = ...
0
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1answer
26 views

Can I avoid decimal conversion calling CostDistance

Our client asked us to incorporate blockages and delays for movement of boats and ships on the local waterways. In our one process we are creating polygons of the distance a boat can move at top ...
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0answers
40 views

GDAL - least cost path analysis height data

I would like to use Pythons GDAL bindings to find the least cost path through an array and then show the route on top of the original array. I am using DEM data and would like the slope to be taken ...
0
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1answer
126 views

How to create a loop for multiple points with cost distance / cost path in ArcGIS 10.2 in python

I would like to know how to simplify the following code in order to execute it more efficiently than copy paste 82 processes (with a loop I guess?) but I don't know how to do it. There are 4 main ...
4
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3answers
190 views

How to model money cost as an accumulator in network analysis?

This is not necessarily a technical coding question, although any links that include coding are welcome if they are answering my question. I am looking for research or analysis that has been done in ...
1
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1answer
479 views

How to Create Cost Surface Raster for Least Cost Path Analysis?

I have a DEM raster and would like to carry out a cost path analysis. Among other factors such as slope, proximity rivers etc. I would also like to take elevation into consideration. According to ...
0
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1answer
18 views

Create Cost Array ignores NoData!

After a great deal of research here is what is happening: We select two points on a hydrography map with an island inbetween. It is expected that the CostDistanceWithPolyline would return a line that ...
0
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1answer
100 views

calculate least cost pathways for a region and create distance rasters to rivers [duplicate]

How do you calculate all the least cost pathways that exists for a region? I would like the output map to display all routes (and was wondering whether this can be done in one set of operations). I ...
3
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2answers
164 views

How to calculate the distance of sites to riverways

How do you calculate the distance of about 10 sites scattered across a region to bodies of water (rivers and lakes) using ArcGIS 10.1? I have the lat/lon coordinates of the 10 sites as a point ...
3
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1answer
466 views

How to perform a Cost Path analysis in ArcGIS 10.1?

Is it possible to model the easiest pathway through a landscape between many points (rather than just two)? I want to carry out a cost-path analysis, I would like to display the easiest pathways ...
0
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0answers
40 views

Skimage graph route to multiple destinations

I want to route through an array with skimage.graph.route_through_array. I have one start point and multiple destination points. I am wondering if it is possible to insert the multiple destination ...
2
votes
1answer
100 views

How to find least-cost paths including tunnels (where slopes are too steep)?

I'm currently working on a road path finding project for a motorway in ArcGIS 10. One criterion is obviously the slope angle. What I would like to do is to create a new cost surface which finds ...
1
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1answer
89 views

QGIS Grass Plugin fails with r.cost.vect

I tried the following in QGIS with the Grass Plugin: r.cost input=preCostSurface@albi start_points=OSMroads@albi output=cost0109 max_cost=0 And I get the following error: Dev note: Adapted sites ...
2
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0answers
58 views

Get distance after path distance allocation

I use ArcGIS 10.1 in Windows XP. I have a two point feature data sets One containing a single point P1 and another containing multiple points Pm. I computed the minimum-distance path from P1 to each ...
1
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2answers
246 views

How to find the shortest route between two points based on cost surface?

I have two locations: (A) starting point and (B) designation. Also I have a slope raster. I want to find the cheapest path between these two locations based on the slope (it is more expensive to ...
3
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1answer
190 views

creating an OD cost matrix in QGIS

I'm a new user of QGIS with limited programming skills (I prefer using menus...). Can anyone help me finding a resource which will guide me through the steps required to produce an origin-destination ...
2
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0answers
153 views

How to convert a raster (array) to a NetworkX graph and do a * search?

I want to use a slope-raster for a a_star path analysis in NetworkX. I am using Python for this project. My test raster looks like this First I read in the raster with GDAL input_raster = ...
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1answer
125 views

Python/GDAL: Best way to read in raster for use in A* search algortihm

I want to create a least cost path program with Python and GDAL since I couldn't find any open source cost path additions for use in Python. As recommended here the best approach is to use A* ...
2
votes
1answer
210 views

Raster map in different zone () than region ()

I am new to QGIS (just installed QGIS 2.0.1) and am having problems running any spatial analysis tools. I followed the instructions on how to call GRASS tools into QGIS, but when I try to run the ...
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0answers
108 views

Python Script Producing Empty Cost Path Rasters

I'm trying to run a script that will create cost paths for a large number of randomly generated points then assign the cost to those points. But my script is beginning to create cost path rasters ...
4
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1answer
204 views

Shortest raster path

I am trying to create a path from the blue square to all the green dots. The blue square represents an existing road and the green dots represent centroids of forest stands. The total path distance ...
2
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0answers
241 views

Cost Path tool in script randomly throws error

I have a script tool that is creating a least cost path for sets of points using a Cursor. When applied, the script runs great, except every so often the tool is stopped because there is an error in ...
1
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1answer
729 views

Using Dijkstra's algorithm for multiple source to single destination shortest paths

I'm going over a lecture recording, in it my professor mentions using Dijkstra's algorithm (or a modified version of it) to find multiple-source to single source shortest paths, e.g. finding the ...
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0answers
49 views

How specify a corridor minwidth?

I’m trying to make a corridor between two substations with ArcGIS, a macro corridor and a micro corridor. I have two questions in this respect and would be grateful for your suggestions. a) How can ...
2
votes
2answers
206 views

Finding distance (in time) from nearest point out of 4 along a road network

I have four points representing harbors along the coast. I also have a roads layer that has info on each road segment such as length, speed limit, and travel time. I calculated travel time with ...
3
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2answers
147 views

Is r.cost equivalent to diffusion interpolation with barriers?

I want to perform interpolation using cost distances rather than euclidean distances similar to Greenberg et al. (2011). In that paper they use r.cost in GRASS to compute cost distances for each ...
2
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0answers
144 views

ArcMAP path distance function handling of polygon and raster inputs

I am using a path distance function to calculate distances from a set of source cells on a land use raster. Unfortunately, my land use raster and my other inputs have different cell sizes. The land ...
2
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0answers
127 views

Plot the Shortest Paths in a Grid without any clash at a point of time

The efficient algorithm needs to be done and proved for the best solution for the given problem: User inputs: (#) Size of the NxN Grid. (N); (#) No. of Paths: Z; (#) Source and Destination ...
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0answers
169 views

How to Create Multiple Start and Destination Cost Paths?

I have a suitability matrix which was created in model builder based on elevation data and multiple start data points and end data points representing schools. I'd like to link all the schools up ...
6
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3answers
936 views

Find a proper path between two nodes in a grid

This question is about finding a proper path (route) between two nodes (P,Q) in a grid (i.e., graph, network, ...). In our concept, we define a path proper (nice) if it is the most similar* to the ...
8
votes
1answer
770 views

Problem analysing movement using cost surfaces (involving ArcGIS's Path Distance-tool)

I would like to analyse hypothetical movement (on foot) in a landscape as based on energy expenditure, but I have run into some trouble that I am hoping that you could help me with. I have tried to do ...
2
votes
1answer
206 views

Connect points along bathymetry contours

I have a table with start and end point data in each row and need to convert them into lines, but I would like something other than a straight segment. Ideally, I want to connect the points via a ...
2
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0answers
59 views

How do I make a path cross the most possible classes in a raster?

I want to create a function and possibly use Arcmap tools to create something similar to Cost Path. Instead of just choosing the LCP, it must cross through the most different integers. Let's say I ...
4
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0answers
408 views

ArcGIS Cost Path Analysis - How Is Arcpy Cost Path Analysis Tool So Much Faster Than ArcObjects

Although I love slinging some python to create geoprocessing scripts/services, I was under the impression that using ArcObjects to do the equivalent operation(s) will have better performance. I've ...
5
votes
2answers
610 views

GDAL - Perform Simple Least Cost Path Analysis

I am investigating methods to perform a simple least cost path analysis with gdal. By simple, I mean using the slope of a dem as the only cost factor. I would prefer to do using the python or .net ...
6
votes
1answer
564 views

How do I find least cost path over a DEM based on slope magnitude and direction?

What sort of algorithms can I use to find a least cost path through a DEM where it costs more to traverse a cell going downhill or uphill than it does to follow the contour of the land? All the ...
4
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4answers
2k views

Using a list of geographic locations, and determining the X closest locations to a user-defined location

I've got a list of geographical locations in an Excel spreadsheet. I want users to be able to search for a user-defined location, and then have the X number of closest locations from the list pulled ...
16
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3answers
669 views

Dealing with bridges and tunnels when modeling raster least cost paths?

I'm currently using ArcGIS 10 Spatial Analyst's Cost Path tool to model pedestrian routes. I have sidewalks, fences, buildings and a ton of pedestrian scale features, all combined into a cost surface ...
13
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0answers
548 views

Incorporating Length of Route Value into Cost Evaluator Function (ArcGIS Network Analyst)? [closed]

A friend and I (who more frequently than I posts on this board) are creating a walking network and we have run in to a snag. We would like to attribute a cost evaluator to our network dataset using a ...